Lamp



Feb. 14, 1928.

R. S. DAVIS LAMP Filed April 27. 1926 Zin/ventola M Patented Feb. 14, 1928.

UNITED'STATES RALPH s. Davis, E KNoXvrLLE, TENNESSEE.

LAMP.

Application Iled April 27, 1926. Serial No. 104,988.

This invention relates to lamps, andk more particularly to portable reading lamps which kare attachable to various articles ot furniture.

It has heretofore been proposed to pro-k vide such lamps with reflectors which have been placed on one sideof the lamp so as to intercept the raysidirected to that side and reflect them back toward the other side of the lamp. Such reliectors, however, dii'- fuse the light rays throughout a large lZone and do not reflect a beamdirectly on the reading mattei to be illuminated. Morecver, the direct rays of the lamp are com'fk bined with the reiiected rays in the light j zone. This is particularly objectionable *when the lamp is attached to a bed, for eX- ample, and is directly above the head of the reader, since the light rays strike directly into the eyes, resulting in a glare annoying to the reader andinjurious to the eyes.

One object ot the present invention is to provide a novel and improved form ot reading lamp which may be adjusted to eilectw ally prevent the light rays from striking the eyes of the reader and at the same time to properly illuminate the desired object.

illnother object is to provide a lamp with a reflector which may be adjusted to 'throw 0- a beam of light Vwhich is restricted to the reading matter or other object.

A further object is to provide means in a reading lamp whereby the direct rays are intercepted and reflected rays only are directed onto the readingmatter, thus producing an indirect lighting eiiect.`

Two embodiments of the invention have been illustrated in thejaccoinpanying drawings,y but it is to be expressly understood that these drawings are for purposes of illustration only and are not to-be taken as a delinition of the limits ot the invention, reference being had to the appended claims tor this purpose.

In the drawingsl Fig. l is an elevation in section of one'embodiment of the invention;

Fig. 2 is a plan view of Fig. l, the cover or shade being removed for the sake of clearness; and

Fig. 3 is an elevation in section showing another form of glare shield.

Referring now to Figs. l and 2 which Vil-v 'wire framework. A suitable covering 2, of

cloth. or other material, partially surrounds the circumference and ends ot the frame l, an opening for the passage of light rays be- 'ing lett in a portion of the circumference,

which opening, asshown in Fig. l, is in the lower Yside of the frame l. Suitable means are provided for attaching the frame l to an article vof furniture, Such-.is the headboard 3 of a bed. In the forni shown, the frame l is provided with tworearwardly extendingarms i adjacent its upper portion, the outer ends of said arms being curved downwardly to engage the head-board of the bed, and with a 'rearwardly extending wire bracket 5 adjacent its lower portion, which rests against thehea-d-board 3.

Atone end of Vthe frame, an electric light socket 6. is mounted by means of a wire bracket 7, and carries an electric lamp 8.

Light rays from the lamp 9 can escape from the device only through the opening. inthe lower side of the cover. To prevent the direct rays from passing through this opening and striking the eyes ofthe reader, suitable means, preferably adjustable, are provided for closing saidopening to rany desired extent, said means comprising an adjustable shade or glare shield, 9, made of shade passes over a supporting rod 1.1` suitably attached tothe frame l, adjacent the endflO, and is provided with a plurality of transversely extending rod members 12,

spaced'throughout its length. The ends of the rod members 12 are supported in suit able guideways 13, formed on the trame l,

or attached thereto in' any suitable man- Vvpin 17, in a position to receive the rays of vlight from the lamp and reflect the Vsaine through "the opening in the cover. Preferably, the mirror is mounted at the rearedge o said opening, in a substantially vertical position andfextending partially Within the the rays extending rearwardly and downwardly pass over the glare shield 9 and strike the mirror 15, which reflects them forwardly and downwardly under the glare shield 9, the direction and size of the reflected light beam being shown in dotted lines. By adjusting the mirror 15, as shown in dotted lines in F ig. 1, the direction of this beam of light may be varied.

Fig illustrates another torni of glare shield which may be employed. ln this embodiment the glare shield is wound on a roller 19 suitably mounted at each ofrits ends in the frame 1. A small chain or wire 2O is wound around the roller 19 and attached to the latter, the free end of said wire being attached to a resilientI member, such as the spring 21, said spring being attached to the frame 1. rfhe spring 21 is adapted to rotate the roller 19 so as to wind up the shade 9. The slide 1.3 is provided with a series of notches 22 in which the ends of the rod member 12 engage, so as to maintain the shade in the desired position. For convenience in adjusting the shade, a small handle 23, preferably of wire, is attached to the rod 12.

It will be seen that the direct rays from the electric light cannot escape from a reading lamp constructed according to the invention and that the reflected rays only are directed outwardly for illuminating purposes. All annoying and injurious glare is therefore eliminated-` At the same time the beam of reflected light may be adjusted in any desired direction, and is restricted to the object to be illuminated.

lVhile two embodiments of the invention have been illustrated in the accompanying drawings, it is to be expressly understood that the invention is not limited to these embodiment-s, but is susceptible of a variety of expressions, and that changes may be made in the construction and arrangement of parts without departing from the spirit of the invention. Reference is therefore to be had to the appended claims for a definition of the limits of the invention.

lVhat is claimed is 1. lnV a device of the class described, a frame, a cover for the upper and side portions of said frame, an electric lamp supported within said frame, a horizontally adjustable shield partially closing the lower portion of said frame, and a reflector pivoted on said fra-ine below and to the rear of said lamp, said reflector being adapted to direct light from said lamp forwardly and downwardly under said shield.

2. ln a device of the class described, a frame, an electric lamp mounted on said frame, an adjustable shade below said lamp, means for mounting said shade including a roller and resilient means normally tending to wind up said shade on said roller, means maintaining said shade in an adjusted position, and a reflecting mirror pivoted to said frame below and to the rear of saidlamp.

An indirect lighting bed lamp comprising a lamp, an opaque cover therefor extending around and under said lamp and having an opening restricted to the part thereof which is to the rear of and in a substantially horizontal plane below said lamp, said cover intercepting all rays from said lamp except through said opening, and a substantially vertical reflector positioned in the rear part of said opening and extending partially above saidy plane within the cover and partially below said plane, said reflector receiving rays directed toward said opening and rellecting a beam of light outwardly of said cover and forwardly and downwardly.

In testimony whereof I have signed this specification.

RALPH S. DAVIS. 

